Merge origin/master (v0.5.81) into gitea/new_feature

Resolve conflicts:
- streamingHandler.js: merge buildStreamErrorBytes onAbortTerminal + local shouldPersistRequestDetail & streamStatusForContent
- capabilities.js: preserve server-injected user-asserted caps and models.dev catalog lookup; wire CommandCode /alpha/generate caps inside resolve()
- commandcode.js (services/usage): adopt upstream whoami + billing credits/subscriptions with 5h/weekly rate windows and plan caps
- openai-to-commandcode.js: merge toNativeImageBlock (data-URI & http(s) support) and assistant reasoning_content preservation
- commandcode-to-openai.js: adopt upstream mid-stream error throw for clean retry and abortion
- tests: sync commandcode test suite and exclude .next from vitest config

tests/translator/bugs-gemini-cursor-commandcode.test.js

@@ -114,9 +114,7 @@ describe("OpenAI → CommandCode", () => {
 		).toBeGreaterThan(0);
 	});
 
-	// openai-to-commandcode.js — image blocks now map to {type:"image", image:"data:..."}
-	// FIXED: was "[image omitted]", now preserved as data URI
-	it("image content is preserved", () => {
+	it("image content is preserved as native CommandCode image blocks", () => {
 		const out = O2CC({
 			messages: [
 				{
@@ -131,6 +129,15 @@ describe("OpenAI → CommandCode", () => {
 				},
 			],
 		});
-		expect(JSON.stringify(out), "image omitted").toContain("BBBB");
+		expect(JSON.stringify(out)).toContain("BBBB");
+		expect(JSON.stringify(out)).not.toContain("[image omitted]");
+		expect(out.params.messages[0].content).toMatchObject([
+			{ type: "text", text: "look" },
+			{
+				type: "image",
+				image: "data:image/png;base64,BBBB",
+				mimeType: "image/png",
+			},
+		]);
 	});
 });